Dual Wielding Crayons
(Published on 22. April 2026, 16:27 by Scojo)
Rules:
- Normal sudoku rules apply: Place the digits 1-9 once each in every row, column, and 3x3 box.
- Modular line: Any set of three adjacent digits along the hollow teal line has three different remainders when divided by 3; that is, a remainder-0 digit (369), a remainder-1 digit (147), and a remainder-2 digit (258).
- Entropic line: Any set of three adjacent cells along the solid peach line must contain a low digit (123), a middle digit (456), and a high digit (789).
- Thermometer: Digits along the thermometer strictly increase from bulb to tip.
Solve in SudokuPad

Solution code: Row 6
Solved by arteful, Manta-Ray, gdc, lianarox, DubiousMobius, sgerstenberger, lmg131, SKORP17, ChinStrap, Black_Doom, SennyK, karlmortenlunna, wolf69, gxorgx, avishai, mihel111, ordnanceordinance, parkinson, ... Janie, DaniK, Zeld1, Crusader175, robertolosada, Johan111, BrotherDugi, QuiltyAsCharged, steinchen, Nell Gwyn, misha, Katchoo, damo_89, EmmaMadelief, Trein, ly_ra17, nyxie, sehringdipity, jennyaa
Comments
on 12. May 2026, 22:53 by steinchen
I had to restart from the beginning once because I couldn't find where I went wrong. But second time was the charm and it's fun when everything falls into place in the end :)
on 27. April 2026, 04:16 by RedBarchetta
2 hours over three days and worth every minute! I had to walk away to see a fresh look. I saw the power of the thermo, but I didn't appreciate the power of the entropic line. What a nice resolve - thanks!
on 26. April 2026, 22:17 by egglet
took me almost 1.5h but i loved the thermometer & entropic
on 24. April 2026, 16:22 by Exigus
Excellent construction. Found it quite hard but very rewarding. Thanks!
on 23. April 2026, 13:25 by Franjo
Thank you very much for creating and sharing this absolutely fantastic puzzle.
on 23. April 2026, 03:19 by mihel111
Lovely.